Device for making pulleys with multiple parts.



Paten ted Jan. 9, I900. n. CHILLINGWORTH.

DEVICEFOR- MAKING PULLEYS WITH MULTIPLE PARTS.

(Application filed July 18, 1899.)

2 Sheets-Sheet I.

(No Model.)

ATTOIIMF 8 m: Mamas warms ho. PHoTo-u'mu, wnsmnurou. 0.1;.

Nu. 64l,077. Patented Jan. 9, 1900.

R. GHILLINGWORTH.

DEVICE FOR MAKING PULLEYS WITH MULTIPLE PARTS.

(Application filed July 18, 1899.)

(No Model.) 2 Sheets$heet 2.

on g H VH: NORRIS Pz'rzns co, Moral uuuu WASNXNGTGN. 11s.;

PATENT Orrrcn.

RUDOLF oniumewonraou NUREMBERG, GERMANY.

SPECIFICATION forming part of Letters Patent No. 641,077, dated January 9, 1900.

Application filed July 18,1899- $erial No. 724,322. (No model.)

To aZZ whom, it may concern:

Be it known that I, RUDOLF CHILLING- WORTH, a subject of the Emperor of Germany, residing at Nuremberg, Bavaria, Germany, have invented certain new and useful Improvements in Devices for Making Pulleys with Multiple Parts, of which the following is a specification.

The present invention consists of an improved device for stamping the halves of divided belt-pulleys and of the details of construction hereinafter set forth, and particularly pointed out in the claims.

In order to render the present specification easily intelligible, reference is had to the ac companying drawings, in which similar letters of reference denote similar parts throughout the several views.

Figure 1 is a vertical cross-section through the device, Fig. 2 a vertical longitudinal section, Fig. 3 a perspective view of the finished pulley-half, and Fig. 4 an end elevation of the device, these figures all relating to the form of machine as employed for making pulleys with fiat cylindrical surfaces. Fig. 5 is a longitudinal section through a machine for making pulleys having rounded peripheral surfaces. Fig. 6 is a perspective view of a finished pulley-half, and Fig. 7 is a vertical cross-section of this machine.

According to the present invention the pulley-halves are stamped from pieces of pipe or tube of suitable metal, the said pipe-pieces -being first flattened at one side,and then,with the aid of movable matrices and a corresponding die, the half-round depression for the reception of the shaft is formed in the same. The piece of pipe 0, of which the pulley-half is formed, is first placed in the half-round matrix a, and the vertically-guided die-bar 61, having dies or stamps f g, is caused to descend and flatten the upper part of the pipe, so that the same is formed to a semicircular piece having a flat upper surface. This part of the work is done by the fiat die f, mounted in the dovetail groove of the plate e, fast to the end of the slide-bar 01, said die being adapted to slide in the said groove. After the piece of pipe has been Worked to this extent the sliding matrices h h are brought into operation. These matrices are formed to the shape which it is desired to impart to the finished pulleyi. e., in the present case the central parts of the fiat surfaces are depressed, so as to leave a facing to meet the corresponding facing of the other half, Fig. 3. The two halves of the matrices h h, which may be interchangeably mounted on the slide-blocks to, project over the ends of the said blocks toward each other, so that when the said blocks are moved toward each other the matrix ends will meet within the flattened piece of pipe and form the bed into which the die g forces the metal of the pipe. The slideblocks 1' 'i are moved by means of a rotary screw-spindle p, having right and left hand screw-threads o 0, which engage internallythreaded sleeves n at, having lugs m m, fitting into the lower part of the said slideblocks 2'. The spindle may be turned by means of a crank-handle (not shown) attached to the squared end' of the same. The blocks are guided in the guide-cheeks 7c is. The die 9 corresponds in form with the matrices h h, and

after the die f has flattened the top of the pipe it is pushed along its groove and the die 9 moved into position over the said matrices. The bar is then caused to descend and stamps or presses the semicircular groove to receive the shaft and the depressions to form the raised face. The matrices h h are then withdrawn by rotating the screw-spindle p in the opposite direction, and the finished half may be taken out of the press.

In the modification of the invention as shown in Figs. 5 to 7 the matrix ais hollowed out to form the curved cross-section of the pulley-rim, and since it would be impossible to form the movable matrices h h to correspond to this curve, owing to the fact that "they could not be moved forward into the pipe after the latter had been partially treated, correspondingly-curved sections 0' r are first laid within the pipe and secured by a Wedgeshaped central section 5, these sections presenting a horizontally-running surface, so that the matrices h h may now be moved into position over the sections and the stamp or die g may be depressed or lowered to form the joint facing in the manner substantially as described with reference to Figs. 1 to 4:. The construction and operation of the other parts of the machine are substantially the same as described with reference to the foregoing figures.

The matrix a of both forms of the invention is interchangeably mounted in the bed of the machine, and the matrices h It may also be unscrewed and others substituted for the same. The diesfand g are also removable, and others may be substituted, so that the machine may be easily adapted for making pulleys of different forms and diameters. Any means may be employed for raising and 1owering the bar d.

The operation of the modification described with reference to Figs. 5 to 7 is substantially the same as that of Figs. 1 to 4, with the ex ception of the insertion of the sections r r and s.

I claim as my invention 1. A machine for making pulleys with multiple parts from pieces of pipe or tube having means for reducing a piece of tube of circular cross-section to a semicircular cross-section having a flattened side and independent means forsubsequently producing in said flattened side a semicircularly-cross-sectioned groove concentric with the rim of the halfpulley substantially as described.

2. A machine for making pulley-halves from pieces of metal tube having means for producing from a'pipe or tube of circular crosssection a semicircular body of larger diameter, having a flattened side, and independent means for subsequently producingin the said flatten ed side a semicircularly-eross-sectioned groove running concentrically to the outer diameter and for depressing the interior flat surfaces, to form a facing substantially as described.

3. In a machine for making pulley-halves from pieces of tube, the combination of a semicircularly recessed matrix, to receive the piece of tube, and a vertically-reciprocatory die thereabove, and laterally-movable matrices to be inserted into the said tube after it has been flattened at the upper surface and means for moving said matrices in the manner and for the purpose substantially as described.

4. In a machine for making pulley-halves from pieces of tube, the combination of asemicircular matrix to receive the tube, a vertically-reciprocatory die-carrier above thesame,

having alternately-acting dies and laterallymovable matrices capable of being projected into the ends of the said tube piece, and means for forming the semicircular depression in the flattened side to receive the shaft substantially as described.

5. In a machine for making pulley-halves from tube-pieces, the combination of a semicircular matrix to receive the tube-piece, and a vertically-reciprocatory die-holder above the same, a flat die to flatten the upper surface of the said tube-piece, and laterally-movable matrices to extend into the tube ends after the said tube has been flattened, means for moving said laterally-movable matrices and a second die mounted on the die-carrier to form the concentric groove in the flattened pulley-half in the manner and for the pur pose substantially as described.

6. The combination of a stationary semicircular matrix to receive the piece of tube, and a vertically-reciprocatory die carrier thereabove, a flat die and a die to form the shaft-depression on the flat side of the tube, said dies being adapted to slide along the diecarrier and to be substituted one for the other, laterally-sliding matrices to project into the ends of the saidtube after one side has been flattened and a set of sections adapted to be placed within the tube after flattening and before the laterally-projecting matrices are projected into the same in the manner and for the purpose substantially as described.

In witness whereof Ihave hereunto set my hand in presence of two witnesses.

RUDOLF GHILLINGWORTH. Witnesses:

ANDREAS SLIcY,

OSCAR BOOK. 

